Letter (Astounding Stories, November 1937): Explaining "Spirit Rapping"?

From Author Wars - https://authorwars.com/books/letter-astounding-stories-november-1937-explaining-spirit-rapping-3393885.html

Overview:

Title: Letter (Astounding Stories, November 1937): Explaining "Spirit Rapping"?
Author: Rudolph Castown
Year: 1937
Type: Essays

Editions/Publications:

Unknown. Astounding Stories, November 1937 (Unknown, Rudolph Castown, Street & Smith Publications, Inc., $0.20, 164 pages, pulp, MAGAZINE)

This text has been adapted from the Letter (Astounding Stories, November 1937): Explaining "Spirit Rapping"? entry at the Internet Speculative Fiction Database and is available under a Creative Commons License. The ISFDB does not endorse or sponsor this use.